Buchi SpeedDigester K-439 Operation Manual
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Buchi SpeedDigester K-439 Operation Manual

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SpeedDigester K-439
Operation Manual
11593351
en

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Summary of Contents for Buchi SpeedDigester K-439

  • Page 1 SpeedDigester K-439 Operation Manual 11593351...
  • Page 2 E-Mail: quality@buchi.com BUCHI reserves the right to make changes to the manual as deemed necessary in the light of experi- ence; especially in respect to structure, illustrations and technical detail. This manual is copyright. Information from it may not be reproduced, distributed, or used for competi- tive purposes, nor made available to third parties.

  • Page 3: Table Of Contents

    Operating controls and housing ......22 6.1.1 SpeedDigester K-439 — front side ......22 6.1.2 System rear side .
  • Page 4 Table of contents 6.7.1 Kjeldahl digestion —preparing sample tubes..... . 37 6.7.2 Peroxide digestion —preparing sample tubes ..... 38 6.7.3 Installing a suction module and sample tubes (300 ml).

  • Page 5: About This Manual

    1 About this manual About this manual This manual describes the SpeedDigester K-439 and provides all information required for its safe operation and to maintain it in good working order. It is addressed to laboratory personnel and operators in particular.

  • Page 6: Safety

    2 .2 Proper use The SpeedDigester K-439 has been designed and built for laboratory use only. Its intended use is to allow digestion of samples with concentrated acids or peroxides by heating up the probe. A suction unit (e.g. Scrubber or water jet pump) has to be connected to the suction module to safely withdraw fumes which will emerge during digestion.

  • Page 7: Safety Warnings And Safety Signs Used In This Manual

    2 Safety 2 .4 Safety warnings and safety signs used in this manual DANGER, WARNING, CAUTION and NOTICE are standardized signal words for identifying levels of hazard seriousness of risks related to personal injury and property damage. All signal words, which are related to personal injury are accompanied by the general safety sign.
  • Page 8 2 Safety Symbol Meaning Explosive gases, explosive environment Explosive material Fire hazard Harmful to life-forms Hot item, hot surface Device damage Inhalation of substances Chemical burns by corrosives Fragile components Wear laboratory coat Wear protective goggles K-439 Operation Manual, Version B...

  • Page 9: Product Safety

    2 .5 Product safety The SpeedDigester K-439 has been designed and built in accordance with current state-of-the-art technology. Safety warnings in this manual (as described in section 2.4) serve to make the user alert to and avoid hazardous situations emanating from residual dangers by giving appropriate counter measures.
  • Page 10 2 Safety WARNING Death or serious burns by flammable vapors. • Remove all sources of flammable vapors • Do not store flammable chemicals in the vicinity of the device WARNING Risk of death or serious chemical burns by hot acid or peroxide fumes. •...

  • Page 11: Warning Labels On Housing And Assemblies

    2 Safety 2 .5 .2 Warning labels on housing and assemblies The following warning sticker(s) can be found on the housing or assemblies of the SpeedDigester: Symbol Meaning Location Sticker / label, located on top of the housing and Hot item, hot surface at the racks Do NOT put rack into side cooling position Label on 500 ml racks...

  • Page 12: Built-In Safety Elements And Measures

    (e.g. Scrubber B-414) or via water jet pump into a sink or sufficient suction flow. 3rd party glassware The quality of the material is an essential part of the safety concept of the SpeedDigester K-439. For the special rack (order no. 11055440), the following qualified vendors offer sample tubes of sufficient...

  • Page 13: Technical Data

    3 Technical data Technical data This chapter introduces the reader to the SpeedDigester K-439 and its specifications. It contains the scope of delivery, technical data, requirements and performance data. 3 .1 Scope of application and delivery All system configurations come with a limited set of accessories as a starter kit. Within a system family, additionally available accessories (see section 3.1.2 and the following) can be used to easily recon-...

  • Page 14: Accessories For 300 Ml Sample Tubes (For Standard Applications)

    3 Technical data 3 .1 .2 Accessories for 300 ml sample tubes (for standard applications) Recommended quantity to Item Additional info Order number order Set of sample tubes 300 ml, 4 tubes 037377 Suction module standard 6 place 11055849 Suction module condensate trap 6 place 11055865 Suction module H...

  • Page 15: Accessories For 3Rd Party Production, 250 Ml Sample Tubes

    Set circular spring and holder 6× OPTIONAL 11055985 — Note Tested 3rd party sample tubes (listed in section 2.5.4) are not available at Buchi. Please contact your local OEM vendor for these type of tubes. K-439 Operation Manual, Version B...

  • Page 16: Technical Data

    15,5 kg Rack 2,5 kg (per rack) Note The SpeedDigester K-439 is suited to work with an input power range of 220 V to 240 V mains voltage. Check your local voltage requirements prior to installation! K-439 Operation Manual, Version B...

  • Page 17: Materials Used

    3 Technical data 3 .3 Materials used Materials used Component Material designation Material code Stainless steel Housing Heating chamber Heating element Rack Hose clamp Silicic acid Heating chamber , SiC Ceramic fiber felt Heating chamber Calcium silicate Insulation plate Phlogopite mica Preheat cover Plastic Front hood...

  • Page 18: Description Of Function

    4 Description of function Description of function This chapter explains the basic working principle of the SpeedDigester K-439. It also shows how the instrument is structured and provides a general functional description of its assemblies. 4 .1 Functional principle The SpeedDigester K-439 is a special heating device to digest samples. It can generate max. tempera- tures of 580 °C.

  • Page 19: Putting Into Operation

    Inspect the instrument for damage during unpacking. If necessary, prepare a status report immedi- ately to inform your Buchi representative. In some countries it is necessary to additionally inform the postal company, railway company or transportation company. Keep the original packaging for future transportation.

  • Page 20: System Fixation

    5 Putting into operation WARNING Risk of death or burns by electric current. • Check for proper grounding before use • Exchange defective cabling instantly CAUTION Risk of minor or moderate injury by heavy weight of the instrument. • Lift the instrument carefully and avoid over exertion •...

  • Page 21: Electrical Connections

    To start the Scrubber B-414 automatically when the digestion process starts, directly connect it to the SpeedDigester K-439 with the optional connection cable (Art. No. 14738). Make sure that the voltage of the Scrubber B-414 corresponds to the voltage of the K-439.

  • Page 22: Operation

    6 .1 Operating controls and housing The SpeedDigester K-439 is equipped with electronic temperature control, an integrated LC-display and a membrane keypad with multifunctional keys. Up to 50 methods can be programmed, 20 of which are already predefined by default.

  • Page 23: System Rear Side

    6 Operation 6 .1 .2 System rear side Bracket with magnetic (elbow) suction plugs T-piece with suction hoses Type plate Mains socket for Scrubber connection Power socket Fuse holders Fuse type: T 10A L 250 V • To access the glass fuses on the rear side use a slotted screwdriver. ➥...

  • Page 24: User Interface

    6 Operation 6 .2 User interface Start Stop Multipurpose buttons Button Functionality Start Starts a process Stop Stops a process • Increases values such as time or temperature • Selects adjustments • Decreases values such as time or temperature • Selects adjustments Functionality changes on the basis of the corresponding button description on the display K-439 Operation Manual, Version B...

  • Page 25: Program Structure Overview

    Select the required - Delete Methods Configure and method save a method - user methods - Load Methods - Buchi methods History View the last 3 digestion processes Manual Start a manual digestion - choose one or both rows to be...

  • Page 26: Software Buttons

    6 Operation 6 .4 Software buttons The following control buttons are available in the software for navigation and input confirmation: Next Go on to the next screen, go to the next stored digestion process in the "History" Confirm and/or save a setting and get back to the main/previous screen Get back to the main/previous screen without saving possible settings Back button to move backward within in the submenu structure Forward button to move forward within in the submenu structure...

  • Page 27: Software Icons

    6 Operation 6 .5 Software icons The software icons explained in the following are visible during a digestion process. Most of them are displayed in the upper part of the software screen and also remain visible when leaving the digestion screen.

  • Page 28: How To Prepare The Software For Routine Digestion

    6 Operation 6 .6 How to prepare the software for routine digestion Configure the software according to the following steps to prepare it for routine digestion: 1. Standard instrument settings 2. Manual mode (development of digestion method) 3. Digestion methods (storage of developed method) 4.

  • Page 29: Digestion In Manual Mode

    6 Operation 6 .6 .2 Digestion in Manual Mode The manual digestion mode is mainly used for the development of new digestion methods. The temperature is set manually and can be changed at any time. The total runtime of the digestion is displayed and can be reset.

  • Page 30: Methods Menu

    80 min Note For all Buchi methods a cool down time of 80 minutes is defined in case the customer cools his samples within the heating chambers. If the samples are cooled in the cooling postion, a cool down time of 30 minutes is sufficient and the corresponding Buchi method can be adapted accordingly and saved under a new name.
  • Page 31 6 Operation Defining/Editing a method It is possible to enter 30 user specific methods. For this purpose an existing Buchi method can be modified and saved under a new method name. • Select Main Menu > Methods. • Highlight the method that should be edited by using the up or down buttons.
  • Page 32 6 Operation Note If the rack(s) is/are cooled down inside the heating chamber, the time for the cool down step in the corresponding method must be set to ≥ 80 min, so that no harmful vapors can escape. If the racks are cooled outside the heating chamber, the cool down step in the corresponding method must be set to ≥...
  • Page 33 6 Operation Deleting a method The 20 Buchi standard methods predefined in the instruments software cannot be deleted. A customer specific method can be deleted as follows: • Select Main Menu > Methods. • Highlight the method that should be deleted by using the up or down buttons.
  • Page 34 6 Operation Starting an automatic digestion by loading a method • Select Main Menu > Methods. • Highlight the method that should be loaded by using the up or down buttons. • Press >>. • Now press Load. The “Automatic” screen appears. •...

  • Page 35: Digestion In Automatic Mode

    6 Operation All entered steps are now run through automatically. The set and actual temperature as well as the remaining time, which includes the entered cooling-down time, are indicated on the display • As soon as the heating process is finished, the display starts blinking, the buzzer beeps and the info message "Heating finished"...

  • Page 36: History Menu

    6 Operation 6 .6 .5 History menu The data of the last three digestions can be viewed/checked within the History menu For this purpose select Main Menu > History. The History screen appears. You can now navigate through the available digestion data using the Prev or Next button. To view the set and actual temperature of a certain time within the digestion process use the ±...

  • Page 37: Kjeldahl Digestion -Preparing Sample Tubes

    6 Operation WARNING Death or serious poisoning by contact or incorporation of harmful substances at use. • Before operation, check the instrument for correct assembling • Close unused suction module positions with glass caps • Rinse suction modules, hoses and connectors before use •...

  • Page 38: Peroxide Digestion -Preparing Sample Tubes

    6 Operation 6 .7 .2 Peroxide digestion —preparing sample tubes During the preparation process, handling with peroxides and other dangerous substances is inevi- table. Peroxides are strong oxidants and can form explosives! All steps must be performed under safe laboratory conditions. WARNING Death or serious injuries by toxic and explosive peroxides.

  • Page 39: Installing A Suction Module And Sample Tubes (300 Ml)

    6 Operation 6 .7 .3 Installing a suction module and sample tubes (300 ml) To withdraw hazardous fumes and vapors a suction module must be installed. Prerequisites: All hoses and connectors must be unclogged. Installation steps: For installation and handling all parts must be < 40 °C! •...
  • Page 40 6 Operation Note • Make sure the adapter piece is tightened well without damaging the glassware. • Keep suction hose(s) as short as possible under the given circumstances. • Unused positions should be arranged at the rear end of the rack. Rear side •...

  • Page 41: Installing 500 Ml Sample Tubes

    • If a Scrubber without condensation step is used, the condensate that accrues must be absorbed by means of a Woulff bottle between the SpeedDigester K-439 and the Scrubber. • When operating with 3rd party sample tubes no insulation caps and glass caps are available. In this case, all positions must be equipped with samples! •...
  • Page 42 6 Operation • Insert the prepared sample tubes into the rack(s) 2— start with the first (front) position. • Install the rake 3 to interlock the sample tubes at their head side. Check for secure interlocking! • To separate the rack from the carrier, pull the unlock buttons 4 on both sides of the rack and lift it off the carrier.

  • Page 43: Starting Up The Speeddigester

    For application notes, contact your Buchi application specialist or your local distributor. The 20 predefined Buchi standard methods help to operate the instrument "plug and play" and as a basis to develop your own methods.

  • Page 44: Performing A Peroxide Digestion Process

    For application notes, contact your Buchi application specialist or your local distributor. The 20 predefined Buchi standard methods help to operate the instrument "plug and play" and as a basis to develop your own methods.
  • Page 45 6 Operation ➡ The samples are now digested. Follow-up actions are described in section 6.10. DANGER Risk of death or serious injuries by toxic and explosive peroxides. • Use only original glassware and funnels • Do not use damaged filter funnels •...

  • Page 46: Finishing A Digestion Process

    6 Operation 6 .10 Finishing a digestion process WARNING Risk of dangerous or moderate burns when handling hot parts and sample tubes. • Do not touch any hot parts • Let the system cool down • Cover unused positions with insulation cap(s) at the insulation plate(s) After the digestion process has been completed, the sample tubes must cool down! Metal surfaces of the rack and the SpeedDigester might be hot! ➥When the Scrubber is directly connected to the SpeedDigester it is still running until the cooling-...
  • Page 47 6 Operation Cooling positions of SpeedDigester K-439 The side position shown in the drawing below is only applicable for 300 ml and 250 ml sample tubes and racks. Due to the larger diameter of 500 ml sample tubes the glassware does not fit between rack and housing.
  • Page 48 Do NOT use the side positions with 500 ml rack / glasses! 500 ml racks must be placed beside the SpeedDigester K-439 to avoid a crash between the sample tubes and the housing. Nonobservance will lead to hazardous situations especially when the sample...

  • Page 49: Optional 'Stand With Drip Tray

    6 Operation 6 .11 Optional 'Stand with drip tray' The optional accessory drip tray serves to collect condensated acid which might drip off the suction module(s) after a digestion process and as a space saving way to securely store a suction module. Stand with drip tray (illustration with suction unit) Screw and holder-knob Installing a drip tray...

  • Page 50: Maintenance And Repairs

    Note Use only genuine consumables and spare parts for any maintenance and repair work in order to assure warranty and continued system performance. Any modifications of the SpeedDigester K-439 or parts of it need prior written permission of the manufacturer.

  • Page 51: Customer Service

    Such training and knowledge can only be provided by Buchi. Addresses of official Buchi customer service offices are given on the Buchi website under: www.buchi.com.

  • Page 52: Breakage Of Glassware Inside A Housing Chamber

    7 Maintenance and repairs 7 .2 .1 Breakage of glassware inside a housing chamber Under rare conditions charged sample tubes or other glassware might break inside a housing chamber. In such a case strictly follow the cleaning instructions below! Cleaning under safe conditions •...

  • Page 53: Glass Component Conditions

    7 Maintenance and repairs 7 .3 Glass component conditions Clean the glass components after each working process to prolong their lifetime. The glass assem- blies can be taken out and cleaned manually with water and a commercial cleaning agent (e.g. mild soap solution) or in an ultrasonic bath.

  • Page 54: Rack System

    7 Maintenance and repairs the possibility of unwanted sample contamination (foaming or boiling retardation). Afterwards dry the cleaned seals with a soft cloth. 7 .5 Rack system To prolong the lifetime of the racks, rinse them with water thoroughly to remove possible acid resi- dues.

  • Page 55: 500 Ml Sample Tube Support Spring

    7 Maintenance and repairs 7 .5 .2 500 ml sample tube support spring The 500 ml tube rack is equipped with a tube holder containing five sample tube support springs. Each flat spring must be freely rotatable by a small amount. If swivelling is not possible, exchange the rake! Note •...

  • Page 56: Troubleshooting

    Choose "No" to wait until the system is cooled down to the preheating temperature. EEPROM for Device Data defect or missing! Contact the Buchi customer service. EEPROM for Print Data defect! Contact the Buchi customer service. Temperature sensor 1.

  • Page 57: Diagnostics

    Malfunctions or errors which are not listed in the table are to be corrected by a Buchi trained technical engineer who has access to the official service manuals. In this case, please refer to your local Buchi customer service agent.

  • Page 58: Sensors

    6 Operation 8 .2 .2 Sensors This submenu enables the user to check the functionality of the following sensors: • Voltage: xx VAC • Triac temp.: xx °C • LCD temp.: xx °C • Temperature sensor 1: xx °C • Temperature sensor 2: xx °C 8 .2 .3 Operating Hours This submenu enables the user to view the operating hours of:...

  • Page 59: Device Fuses

    6 Operation 8 .3 Device fuses To change a defective fuse proceed as follows • Switch off the SpeedDigester and unplug the power cord. • To access the glass fuses on the rear side use a flat screwdriver blade. ➥ Turn it approx. 5 turns anticlockwise to free the insert. ➥...

  • Page 60: Shutdown, Storage, Transport And Disposal

    9 .1 Storage and transport Switch off the instrument and remove the power cord. To disassemble the SpeedDigester K-439 follow the installation instructions in section 5 in reverse order. Remove all liquids and dusty residues before packaging the instrument.

  • Page 61: Disposal

    9 Shutdown, storage, transport and disposal 9 .2 Disposal For instrument disposal in an environmentally friendly manner, a list of materials is given in chapter 3.3. This helps to ensure that the components can be separated and recycled correctly by a specialist for disposal.
  • Page 62 9 Shutdown, storage, transport and disposal Health and Safety Clearance Declaration concerning safety, potential hazards and safe disposal of waste. For the safety and health of our staff, laws and regulations regarding the handling of dangerous goods, occupational health and safety regulations, safety at work laws and regulations regarding safe disposal of waste (e.g.

  • Page 63: Spare Parts

    This chapter lists spare parts, accessories and options including their ordering information. Only order spare parts and consumables from Buchi to maintain the warranty status and to assure best performance and reliability of the system and affected components. Any modifications to the spare parts used are only allowed with the prior written permission of the manufacturer.
  • Page 64 10 Spare parts Optional parts Description Order no. Scrubber B-414 with condenser, 230V 037882 Scrubber B-414 with condenser, 120V 037883 Scrubber B-414 with condenser, 100V 037884 Scrubber connection cable 014738 Condensate bottle 4L for Scrubber B-414 048668 Water jet pump 02913 Display cover 11055329...
  • Page 65 10 Spare parts Optional parts Description Order no. Stand with drip tray 11055216 Digestion rod (set of 10) 043087 Consumables Description Order no. Kjeldahl tablets (Hg / Se-free), 250 pcs. 028765 K-439 Operation Manual, Version B...

  • Page 66: Declarations And Requirements

    11 Declarations and requirements Declarations and requirements 11 .1 FCC requirements (for USA and Canada) English: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to both Part 15 of the FCC Rules and the radio interference regulations of the Canadian Department of Communications.
  • Page 68 T +971 4 313 2860 T +52 55 9001 5386 F +66 2 862 08 54 F +971 4 313 2861 latinoamerica@buchi.com bacc@buchi.com middleeast@buchi.com www.buchi.com/es-es www.buchi.com/th-th www.buchi.com We are represented by more than 100 distribution partners worldwide. Find your local representative at: www.buchi.com...

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